Made a serious eight-band effort from near the peak of a 6,100' mountain using yagi's for four VHF+ bands, screwdriver antennas for 80 and 40 meters, and a portable hex beam for 20 through 10 meters...all out of my econobox car.    It was a blast!

Pictures and story: http://ww7d.wordpress.com/2012/07/09/ww7ds-2012-field-day/